{"id":2851,"date":"2026-04-02T08:15:55","date_gmt":"2026-04-02T08:15:55","guid":{"rendered":"https:\/\/wheelsprocket.xyz\/product\/coupling-sprocket-nk80b-nk80-2b\/"},"modified":"2026-04-03T07:39:51","modified_gmt":"2026-04-03T07:39:51","slug":"coupling-sprocket-nk80b-nk80-2b","status":"publish","type":"product","link":"https:\/\/wheelsprocket.xyz\/fa\/product\/coupling-sprocket-nk80b-nk80-2b\/","title":{"rendered":"Coupling Sprocket NK80B \/ NK80-2B"},"content":{"rendered":"
\n\"NK80B<\/p>\n

Technical Specifications \u2014 NK80B \/ NK80-2B Coupling Sprocket<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u067e\u0627\u0631\u0627\u0645\u062a\u0631<\/th>\n\u0627\u0631\u0632\u0634<\/th>\n\u06cc\u0627\u062f\u062f\u0627\u0634\u062a\u200c\u0647\u0627<\/th>\n<\/tr>\n<\/thead>\n
Model<\/td>\nNK80B \/ NK80-2B<\/td>\nAsian Standard Series<\/td>\n<\/tr>\n
\u06af\u0627\u0645<\/td>\n25.400 mm<\/td>\n<\/td>\n<\/tr>\n
Tooth Range<\/td>\nZ=9 \u2013 90<\/td>\n<\/td>\n<\/tr>\n
\u0646\u0648\u0639 \u0647\u0627\u0628<\/td>\nB Type Solid \/ A2 Type Weld<\/td>\n<\/td>\n<\/tr>\n
\u0645\u062d\u062f\u0648\u062f\u0647 \u0633\u0648\u0631\u0627\u062e<\/td>\nStock bore to max bore<\/td>\nFinished bore available<\/td>\n<\/tr>\n
\u0645\u0648\u0627\u062f<\/td>\n\u0641\u0648\u0644\u0627\u062f \u06a9\u0631\u0628\u0646\u06cc C45<\/td>\nHardened teeth<\/td>\n<\/tr>\n
\u0633\u062e\u062a\u06cc \u062f\u0646\u062f\u0627\u0646<\/td>\nHRC 50\u201360<\/td>\n\u0633\u062e\u062a \u06a9\u0627\u0631\u06cc \u0627\u0644\u0642\u0627\u06cc\u06cc<\/td>\n<\/tr>\n
Surface<\/td>\nBlack oxide \/ Zinc plated<\/td>\n<\/td>\n<\/tr>\n
Coupling Type<\/td>\nRoller chain coupling (duplex wrap)<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u0648\u06cc\u0698\u06af\u06cc\u200c\u0647\u0627\u06cc \u06a9\u0644\u06cc\u062f\u06cc<\/h2>\n
\n
\n
<\/div>\n
\n
Roller Chain Flexible Coupling<\/div>\n
Two coupling sprockets and a length of double-strand (duplex) roller chain form a compact flexible coupling that tolerates angular misalignment up to 1\u00b0 and parallel offset up to 0.5 mm.<\/div>\n<\/div>\n<\/div>\n
\n
<\/div>\n
\n
Shock-Load Absorption<\/div>\n
The roller chain element absorbs shock and vibration between motor and load \u2014 protecting gearboxes, pumps, and driven machines from torque spikes common in start-stop operations.<\/div>\n<\/div>\n<\/div>\n
\n
\u2699\ufe0f<\/div>\n
\n
Easy Maintenance<\/div>\n
Chain coupling disassembly requires only disconnecting the roller chain link \u2014 no alignment tools or heat required. Chain replacement restores full coupling performance without disturbing shaft alignment.<\/div>\n<\/div>\n<\/div>\n
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<\/div>\n
\n
High Torque Capacity<\/div>\n
Double-strand roller chain wraps two tooth profiles simultaneously, providing significantly higher torque capacity per unit diameter than jaw or disc couplings of equivalent size.<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/span>\u0633\u0627\u0632\u06af\u0627\u0631\u06cc<\/h2>\n

The NK80B \/ NK80-2B coupling sprocket is used as a matched pair with a duplex (double-strand) roller chain forming a complete roller-chain coupling. Both sprockets must be the same model and tooth count. Bore finished to your shaft diameter; keyway and set-screw included on solid-hub types. \u0628\u0627 \u062a\u06cc\u0645 \u0645\u0627 \u062a\u0645\u0627\u0633 \u0628\u06af\u06cc\u0631\u06cc\u062f<\/a> for torque and misalignment calculations.<\/p>\n

\u06a9\u0627\u0631\u0628\u0631\u062f\u0647\u0627<\/h2>\n
\n
\n\"Pump<\/p>\n
\n
Pump Drives<\/div>\n
Motor-to-pump coupling in water treatment, mining dewatering, and agriculture<\/div>\n<\/div>\n<\/div>\n
\n\"Agricultural<\/p>\n
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Agricultural PTO<\/div>\n
PTO shaft coupling on tractors, balers, and irrigation pump drives<\/div>\n<\/div>\n<\/div>\n
\n\"Fan<\/p>\n
\n
Fan & Blower Drives<\/div>\n
HVAC fan, industrial blower, and cooling tower motor-to-shaft coupling<\/div>\n<\/div>\n<\/div>\n
\n\"Gearbox<\/p>\n
\n
\u26cf\ufe0f Gearbox Coupling<\/div>\n
Motor-to-gearbox flexible coupling on conveyor, crusher, and mixer drives<\/div>\n<\/div>\n<\/div>\n<\/div>\n

\u0646\u0638\u0631\u0627\u062a \u0645\u0634\u062a\u0631\u06cc\u0627\u0646<\/h2>\n
\n
Alan W.  \u2605\u2605\u2605\u2605\u2605<\/span>   \u0627\u0633\u062a\u0631\u0627\u0644\u06cc\u0627<\/span><\/div>\n
“NK80B \/ NK80-2B coupling sprockets fitted to our pump drives \u2014 running flawlessly for 18 months with no chain replacement needed yet. Excellent value.”<\/div>\n
NK80B \/ NK80-2B Z=9 Coupling Sprocket · March 2025<\/div>\n<\/div>\n
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Dieter H.  \u2605\u2605\u2605\u2605\u2605<\/span>   \u0622\u0644\u0645\u0627\u0646<\/span><\/div>\n
“Bore tolerance is excellent \u2014 h6 shaft fit, zero wobble. The chain coupling performs quieter than the jaw coupling it replaced.”<\/div>\n
NK80B \/ NK80-2B Z=12 Coupling Sprocket · January 2025<\/div>\n<\/div>\n
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Asha R.  \u2605\u2605\u2605\u2605\u2606<\/span>   South Africa<\/span><\/div>\n
“Good quality. Delivery to Johannesburg took 12 days \u2014 acceptable. Would have given 5 stars with faster freight.”<\/div>\n
NK80B \/ NK80-2B Z=10 Coupling Sprocket · February 2025<\/div>\n<\/div>\n
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Brett M.  \u2605\u2605\u2605\u2605\u2605<\/span>   New Zealand<\/span><\/div>\n
“Perfect for our irrigation pump coupling refurbishment. Fitted both sprockets and new chain in under an hour.”<\/div>\n
NK80B \/ NK80-2B Z=11 Coupling Sprocket · April 2025<\/div>\n<\/div>\n

\u0633\u0648\u0627\u0644\u0627\u062a \u0645\u062a\u062f\u0627\u0648\u0644<\/h2>\n
\n\n►  How many teeth do I need for a coupling sprocket pair?<\/summary>\n
Both coupling sprockets must have the same tooth count. The most common tooth counts are 9, 10, 11, and 12. More teeth = smoother operation but larger coupling diameter.<\/div>\n<\/details>\n
\n\n►  What chain do I use with coupling sprockets?<\/summary>\n
Roller chain coupling assemblies use a length of double-strand (duplex) roller chain in the appropriate pitch. The chain pitch must match the sprocket pitch exactly.<\/div>\n<\/details>\n
\n\n►  How much misalignment can a roller chain coupling tolerate?<\/summary>\n
Typically \u00b11\u00b0 angular misalignment and \u00b10.5 mm parallel offset at the rated torque. Misalignment beyond these limits increases chain and sprocket wear significantly.<\/div>\n<\/details>\n
\n\n►  Do you supply the complete coupling set (sprocket pair + chain)?<\/summary>\n
Yes. We can supply matched pairs of coupling sprockets with the appropriate length of duplex chain and chain housing (cover) as a complete coupling kit. Contact us for full kit pricing.<\/div>\n<\/details>\n
\n\n►  What is the maximum torque for the NK80B coupling sprocket?<\/summary>\n
Torque capacity depends on tooth count and chain pitch. For NK80B Z=10, typical rated torque is 350\u2013500 Nm depending on speed. Contact our engineering team for a precise calculation for your application.<\/div>\n<\/details>\n
    \n
  1. Finish-bore both coupling sprockets to the respective shaft diameters; cut keyways to drawing.<\/li>\n
  2. Mount sprockets on their respective shafts; align shafts using a dial indicator \u2014 target less than 0.1 mm TIR on coupling hub face.<\/li>\n
  3. Wrap the duplex roller chain around both sprockets and close with a connecting link.<\/li>\n
  4. Install the chain coupling housing (cover) if required for guard compliance or lubrication retention.<\/li>\n
  5. Verify shaft alignment monthly during the first 3 months of operation and re-check after any unexpected load or vibration event.<\/li>\n<\/ol>\n
    \u2713 \u0627\u06cc\u0632\u0648 \u06f9\u06f0\u06f0\u06f1:\u06f2\u06f0\u06f1\u06f5<\/span>\u2713 \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f ANSI B29.1<\/span>\u2713 \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f ISO\/DIN 8187<\/span>\u2713 \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f JIS B 1801<\/span>\u2713 \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f\u0647\u0627\u06cc BS\/DIN<\/span>\u2713 \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f\u0647\u0627\u06cc \u0628\u0631\u06cc\u062a\u0627\u0646\u06cc\u0627<\/span><\/div>\n
    \n
    \n\"\u06a9\u0627\u0631\u062e\u0627\u0646\u0647\u200c\u06cc<\/p>\n
    \n

    \u0686\u0631\u0627 \u0628\u0627\u06cc\u062f Ever-power \u0627\u0633\u062a\u0631\u0627\u0644\u06cc\u0627 \u0631\u0627 \u0627\u0646\u062a\u062e\u0627\u0628 \u06a9\u0646\u06cc\u0645\u061f<\/h3>\n

    \u0645\u0627 \u06cc\u06a9 \u062a\u0648\u0644\u06cc\u062f\u06a9\u0646\u0646\u062f\u0647\u200c\u06cc \u06cc\u06a9\u067e\u0627\u0631\u0686\u0647\u200c\u06cc \u0639\u0645\u0648\u062f\u06cc \u0628\u0627 \u0628\u06cc\u0634 \u0627\u0632 \u06f2\u06f5 \u0633\u0627\u0644 \u062a\u062c\u0631\u0628\u0647 \u062f\u0631 \u0632\u0645\u06cc\u0646\u0647\u200c\u06cc \u0686\u0631\u062e\u200c\u062f\u0646\u062f\u0647\u200c\u0647\u0627\u06cc \u0632\u0646\u062c\u06cc\u0631\u06cc \u0647\u0633\u062a\u06cc\u0645. \u062a\u0623\u0633\u06cc\u0633\u0627\u062a \u0645\u0627 \u06f3\u06f5\u06f0\u06f0\u06f0 \u0645\u062a\u0631 \u0645\u0631\u0628\u0639 \u0648\u0633\u0639\u062a \u062f\u0627\u0631\u062f \u0648 \u0633\u0627\u0644\u0627\u0646\u0647 \u0628\u06cc\u0634 \u0627\u0632 \u06f4 \u0645\u06cc\u0644\u06cc\u0648\u0646 \u0686\u0631\u062e\u200c\u062f\u0646\u062f\u0647 \u062a\u0648\u0644\u06cc\u062f \u0645\u06cc\u200c\u06a9\u0646\u062f. \u0645\u0627 \u0628\u0647 \u0634\u0631\u06a9\u0627\u06cc \u062a\u0648\u0644\u06cc\u062f\u06a9\u0646\u0646\u062f\u0647\u200c\u06cc \u0627\u0635\u0644\u06cc (OEM)\u060c \u062a\u0648\u0632\u06cc\u0639\u200c\u06a9\u0646\u0646\u062f\u06af\u0627\u0646 \u0648 \u062e\u0631\u06cc\u062f\u0627\u0631\u0627\u0646 \u0635\u0646\u0639\u062a\u06cc \u0645\u0633\u062a\u0642\u06cc\u0645 \u062f\u0631 \u0633\u0631\u0627\u0633\u0631 \u0627\u0633\u062a\u0631\u0627\u0644\u06cc\u0627\u060c \u0645\u062d\u0635\u0648\u0644\u0627\u062a\u06cc \u0645\u0637\u0627\u0628\u0642 \u0628\u0627 \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f\u0647\u0627\u06cc GB\u060c ISO\u060c ANSI\u060c JIS\u060c DIN \u0648 BS \u0639\u0631\u0636\u0647 \u0645\u06cc\u200c\u06a9\u0646\u06cc\u0645.<\/p>\n

    \n\u062f\u0627\u0631\u0627\u06cc \u06af\u0648\u0627\u0647\u06cc\u0646\u0627\u0645\u0647 \u0627\u06cc\u0632\u0648 \u06f9\u06f0\u06f0\u06f1<\/span>
    \n\u06f4 \u0645\u06cc\u0644\u06cc\u0648\u0646 \u0639\u062f\u062f \u062f\u0631 \u0633\u0627\u0644<\/span>
    \n\u0642\u0627\u0628\u0644\u06cc\u062a \u0646\u0635\u0628<\/span>
    \n\u0645\u0648\u062c\u0648\u062f\u06cc \u0627\u0646\u0628\u0627\u0631 AU \u0645\u0648\u062c\u0648\u062f \u0627\u0633\u062a<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n
    \n

    \u0622\u0645\u0627\u062f\u0647 \u0633\u0641\u0627\u0631\u0634 \u0647\u0633\u062a\u06cc\u062f\u061f \u0647\u0645\u06cc\u0646 \u0627\u0645\u0631\u0648\u0632 \u06cc\u06a9 \u067e\u06cc\u0634\u200c\u0641\u0627\u06a9\u062a\u0648\u0631 \u0631\u0627\u06cc\u06af\u0627\u0646 \u062f\u0631\u06cc\u0627\u0641\u062a \u06a9\u0646\u06cc\u062f<\/h3>\n

    \u062a\u06cc\u0645 \u0645\u0647\u0646\u062f\u0633\u06cc \u0645\u0627 24 \u0633\u0627\u0639\u062a\u0647 \u0648 7 \u0631\u0648\u0632 \u0647\u0641\u062a\u0647 \u0628\u0631\u0627\u06cc \u06a9\u0645\u06a9 \u0628\u0647 \u06a9\u0633\u0628 \u0648 \u06a9\u0627\u0631\u0647\u0627\u06cc \u0627\u0633\u062a\u0631\u0627\u0644\u06cc\u0627\u06cc\u06cc \u062f\u0631 \u0632\u0645\u06cc\u0646\u0647 \u0645\u0634\u062e\u0635\u0627\u062a\u060c \u0637\u0631\u062d\u200c\u0647\u0627\u06cc \u0633\u0641\u0627\u0631\u0634\u06cc \u0648 \u0642\u06cc\u0645\u062a\u200c\u06af\u0630\u0627\u0631\u06cc \u062d\u062c\u0645\u06cc \u062f\u0631 \u062f\u0633\u062a\u0631\u0633 \u0627\u0633\u062a.<\/p>\n

    \ud83d\udce9 \u062f\u0631\u062e\u0648\u0627\u0633\u062a \u0642\u06cc\u0645\u062a<\/a>
    \n 
    \n    \ud83d\udd0d \u0645\u0634\u0627\u0647\u062f\u0647 \u0647\u0645\u0647 \u0645\u062d\u0635\u0648\u0644\u0627\u062a<\/a><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

    The NK80B \/ NK80-2B coupling sprocket<\/strong> (25.400 mm pitch, Pitch 25.4) is purpose-designed for roller chain flexible coupling assemblies<\/strong>, connecting motor and driven shafts with inherent flexibility to tolerate small misalignments and dampen shock loads. Available in solid (B Type) and welded (A2 Weld) hub configurations across Z=9 \u2013 90, it is the preferred shaft coupling solution in Australian pump, fan, conveyor, and gearbox applications.<\/p>","protected":false},"featured_media":2725,"comment_status":"closed","ping_status":"open","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_cat":[6693,6986,7059],"product_tag":[6866,6865,6867,6868],"class_list":{"0":"post-2851","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-sprockets","7":"product_cat-coupling-sprockets","8":"product_cat-standard-sprockets","9":"product_tag-1-inch-pitch-coupling-sprocket","10":"product_tag-coupling-sprocket-nk80","11":"product_tag-flexible-shaft-coupling","12":"product_tag-heavy-duty-coupling","14":"first","15":"instock","16":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/wheelsprocket.xyz\/fa\/wp-json\/wp\/v2\/product\/2851","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wheelsprocket.xyz\/fa\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/wheelsprocket.xyz\/fa\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/wheelsprocket.xyz\/fa\/wp-json\/wp\/v2\/comments?post=2851"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wheelsprocket.xyz\/fa\/wp-json\/wp\/v2\/media\/2725"}],"wp:attachment":[{"href":"https:\/\/wheelsprocket.xyz\/fa\/wp-json\/wp\/v2\/media?parent=2851"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/wheelsprocket.xyz\/fa\/wp-json\/wp\/v2\/product_cat?post=2851"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/wheelsprocket.xyz\/fa\/wp-json\/wp\/v2\/product_tag?post=2851"}],"curies":[{"name":"\u0648\u0631\u062f\u067e\u0631\u0633","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}